Fuel-burner.



No. 738,537. PATENTED SEPT. 8, 1903.. E. P. GWYNN.

FUEL BURNER. APPLIOATIOI FILED MAR. 11, 1903.

N0 MODEL may be economically used and to provide accompanying drawings, forming a part of No. taster.

UNITED STATES Fatented September 8, 1903.

PATENT OFFICE.

FUEL-B URN ER.

SPECIFICATION forming part of Letters Patent No. 738,537, dated-September 8, 1903.

Application filed March 11, 1903.

To ctZZ whom, it may concern:

Be it known that I, EMMER F. GWYNN, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have in Vented certain new and useful Improvements in Fuel-Burners, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in fuel-burners, and re"- lates more particularly to that type of burners employed for the burning of gas as a fuel;

The object of the present invention is to provide a burner by the aid of which the fuel novel means for thoroughly mixing or commingling the gas with steam and air to increase the combustion.

A still further object of the present invention is to provide novel and eifective means for regulating the volumn of gas admitted Without decreasing the velocity, the quantity of air, and the'quantity of steam admitted to the burner; furthermore, to dispense with the use of jets, nipples, and the like, and to feed the gas and steam into the burner spirally.

With the above and other objects in view the invention consists in the novel construction, combination, and arrangement of parts to be hereinafter more specifically described and then particularly pointed out in the appended claims, and in describing the invention in detail reference will be had to the i this specification, and wherein like numerals of reference will be employed for designating like parts throughoutthe dilferent views, in which Figure 1 is a central longitudinal sectional view of my improved burner, partly broken away. Fig. 2 is a like viewofa modified form of construction. Fig. 3 is a cross-sectional. View, in reduced form, of the air-tube or mixing-chamber, showing by tangent lines the manner in which the gas and steam enters the chamber through the inlet-ports.

My present invention is an improvement on that shown in an application filed by me April 11, 1902, Serial No. 119,226, and the present application relates particularly to openings 7.

the manner of spirally feeding the gas and $erial No. 147,230. (No model.)

steam into the mixing-chamber and'the means for regulating or controlling the amount of gas admitted to the mixing-chamber.

To put my presentinventioninto practice, I provide a tubular body 1, which forms the mixing-chamber, said body being open at both ends and receiving the air at its end 2, the amount of air admitted being controlled or regulated by means of an air-regulating shutter 3, eccentrically mounted, so as to be moved to partially close or entirely close the air-inlet, as desired. This body, which forms the mixing-chamber, is provided with a plurality of circumferentially-arranged openings, made in rows around the body. The

respective rows of openings 4, 5, and 6 are for the admission of gas to the mixing-chamber, While 'the row of openings 7 is for the admission of steam to said mixing-chamber. Each of the openings is made at an incline through the tubular body, whereby the gas and steam admitted through the openings will be projected on a tangent, as best seen in Fig. 3, thus imparting a spiral movement to the volumn of gas and steam admitted,

which spiral rotary movement is continued by the column to the point of ignition. The respective rows of openings 4:, 5, and 6 are of differential sizes-*tha-t is, the row of openings 4 are of one size, the row5 of a different size and the row 6 of still a different sizeand while the volumn of gas admitted through the respective rows of openings will vary, due to the diiference in the size of the openings, I provide means whereby the gas may be admitted into the mixing-chamber through any one or any two of the rows of openings or all of the same, as may be required or desired.

Mounted on the body 1, by sleeving the same thereon or other suitable means, is a sleeve or collar 8, provided on its inner circumference with annular recesses 9, 10, and ll, respectively, for the respective rows of openings 4,5,and 6 and with an annular steamreceiving recess 12 to admit steam through the A steam-supply pipe 14 connects with the sleeve or fitting 8 and communicates with the annular steam-receiving space or recess 12. The sleeve or fitting 8 is constructed on one side, preferably'on that opposite to the steam-inlet, with a boss or en- ICO largement 15, in which is a gas-receiving chamber 16, with which the gas-inlet pipe 17 the quantity of steam to be admitted maybe accomplished by means of a controlling-cock (not shown) in the steam-inlet pipe 14. It is to be observed that with this construction gas may be admitted from the chamber 16 through onerow of openings by opening the controlling-valve thereof, or any two of the rowsof openings may be placed in communication with the gas chamber or chest or all of the rows of openings, as may be desired. The gas admitted into the annular receivingreeesses and also the steam admitted to the recess 12 is fed through the spirally-arranged openings and discharged into the mixingchamber in a manner best seen in Fig. 3, being projected substantially in a spiral form, in which manner it travels through the body or mixing-chamber, giving an impetus thereto whereby to convey it to the point of ignition in a more rapid and effective manner and increasing thereby the elficiency of the burner.

In Fig. 2 I show a modified form of construction in which the mixing-chamber or body of the burner is made in two members 24 25, each of which are provided on their periphery with a threaded portion and which are joined together by the sleeve or fitting 26 threaded thereon. This sleeve or fitting has an inlet 27 for the gas, which inlet communicates with an annular recess or receiving-chamber 28. The sleeve or fitting is also provided with an annular steam-receiving recess or chamber 29, communicating with the steam-inlet 30. The member 25 is provided with one or more rows of spirally-arranged openings 31 32, while the member 24 is provided with a plurality of openings 33, arranged cireumferentially around the member and communicating with the annular steam-receiving recess 29. The member 25 is tapered at its engaging end and fits in the interiorly-beveled engaging end of the member 24, While the annular portion 34 of the sleeve or fitting acts as a valve for the closing of the rows of openings 31 32, whereby to regulate or control the quantity of gas admitted through said openings, while the steam is shut elf by turning in the member 24, whereby to bring the openings 33 over the tapered end of the member 25. The outer end of the member 25 may be provided with recesses or openings 35 to receive a spanner for adjustment of the member to regulate the amount of gas admitted through the openings 3132 into the mixing-chamber, and this end of the burner may also, if desired, be provided with a suitable air-shutter, as shown in Fig. 1. The openings in this construction are made at an incline, whereby to project the gas and steam into the mixing-chamber at a tangent and impart a spiral movement to the volumn as it passes through the burner to the point of ignition, as in the form shown in Fig. 1. p

The principle therefore of imparting the spiral movement to the volumn of combustibles is the same in both constructions shown and described, and also in both of the constructions it is evident that the volumn of gas admitted to the mixing-chamber may be readily controlled without decreasing the velocity, and consequently while I have herein shown and described preferable embodiments of my invention as it has been practiced by me, yet it will be evident that various slight changes may be made in the details of' construction in carrying out the invention without departing from the spirit of the invention involved.

Having fully described my invention, What Iclaim as new, and desire to secure by Letters Patent, is

1. The combination of a hollow body constituting an air-tube and a mixing-chamber, and provided with circumferentially-arranged openings extending therethrough at an angle to the radii of said air-tube, a sleeve or fitting mounted on said body and provided with an annular recess communicating with said openings, an inletin communication with said annular recess,and means interposed between the recess and the inlet for controlling the quantity of fluid admitted to the recess with out decreasing the velocity, substantially as described.

2. The combination of a hollow body'constituting an air-tube and a mixing-chamber, and provided with a plurality of rows of circumferentially-arranged openings extending therethrough at an angle to the radii of said air-tube, of a sleeve or fitting mounted on the body and provided with interior annular recesses communicating with the respective rows of openings, a gas-inlet, a gas chamber or chest in the sleeve or fitting in communication with the gas-inlet, ports between said chamber or chest and the annular recesses in the sleeve or fitting, and means for separately controlling the respective ports, substantially as described.

3. The combination of a hollow body constituting an air-tube and a mixing chamber, said body having a plurality of circumferentially-arranged rows of openings extending through the body. at an angle to the radii of said air-tube, a sleeve or fitting mounted on the body and provided with annular recesses communicating with the rows of openings, a

gas chest or chamber in the fitting, and valves controlling the inlet of the gas from said chest to the respective annular recesses and rows of openings, substantially as described.

4. The combination of a hollow body constituting an air-tube and a mixing-chamber,

sleeve, and means for independently control-v ling the volumn of gas admitted through each row of openings without decreasing the velocity, substantially as described.

5. The combination of a hollow body constituting an air-tube and a mixing-chamber,

and providedwith circumferentially-arranged openings extending therethrough at an angle to the radii of said air-tube for projecting the fluid tangentially into the chamber to impart a spiral movement thereto, a fluid-inlet, a fluid chest or chamber in communication with the inlet, and means between the openings and the chest or chamber for controlling the volumn of fluid admitted through the openings without decreasing the velocity,substantially as described.

In testimony whereof I afiix my signature 30 in the presence of two witnesses.

EMMER F. GWYNN.

Witnesses:

AtM. WILSON, E. E. POTTER. 

